CN109374824A - Test supercritical CO2The method of CONDENSATE OIL AND GAS system phase behavior - Google Patents
Test supercritical CO2The method of CONDENSATE OIL AND GAS system phase behavior Download PDFInfo
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Abstract
Present applicant proposes a kind of test supercritical COs2The method of CONDENSATE OIL AND GAS system phase behavior, this method comprises: step 1, under reservoir temperature, be successively passed through supercritical CO into porous thin slice2Gas and CONDENSATE OIL AND GAS form supercritical CO2CONDENSATE OIL AND GAS system；Step 2, to supercritical CO2CONDENSATE OIL AND GAS system carries out phase behavior test.Pass through test supercritical CO provided by the present application2The method of the phase behavior of CONDENSATE OIL AND GAS system, being capable of supercritical CO under accurate simulation high temperature and pressure reservoir conditions2With the phase behavior of CONDENSATE OIL AND GAS mixed phase, to prove supercritical CO2Can effective displacement condensate gas improve the selection of recovery ratio and displacement condensate gas working system and lay the foundation.
Description
Technical field
The present invention relates to a kind of Eor By Gas Injection analogy method fields, and micro- more particularly, to a kind of test
Supercritical CO in view hole gap2The method of CONDENSATE OIL AND GAS system phase behavior.
Background technique
Gas condensate reservoir is the special oil and gas pools of the complicated type between oil reservoir and pure gas reservoir, has phase, flowing special
Levy complicated characteristic.Gas condensate reservoir while producing natural gas and condensate, economic value is very high but exploitation is very complicated, and there is condensations
The phase-state change and retrograde condensation phenomenon of oil and gas, phase fluctuations caused by misoperation will cause very big condensate when exploitation
Stratum Loss amount, therefore economic, reasonable, effective development scheme need to be determined to improve recovery ratio.For current most of oil, gas
Field exploitation is faced with the problem of needing to further increase recovery ratio and improving displacement efficiency, and Efforts To Develop injects gas in international coverage
The phase displacing medium displacement of reservoir oil improves the research and development and application of recovery efficiency technique, which improves recovery ratio effect in oil reservoir resource exploitation field
Fruit is obvious.Under the guidance of this thinking, related fields experts and scholars are intended to for gas drive technology to be applied to condensate gas exploitation field, with
Improve condensate gas recovery ratio.
Currently, the phase behavior test majority in simulation porous media between gas phase displacing medium and condensate gas is at PVT
Carry out in back-up sand or improvement rock core displacement device, but there are following problems with the method: (1) doing sand, bead, quartz sand living
The Phase Change Experiment that PVT cylinder mould intends porous media microscopic void is filled, porosity is big, and permeability is high, it is difficult to simulate low permeability reservoir
The phase transformation of condensate gas；(2) temperature, pressure is lower, it is difficult to simulate the Phase Change Experiment under hot conditions.
Summary of the invention
For above-mentioned the problems of the prior art, present applicant proposes a kind of test supercritical COs2CONDENSATE OIL AND GAS system phase
The method of behavior, by injecting supercritical CO using porous thin slice as medium2Gas and CONDENSATE OIL AND GAS test supercritical CO2Condensation
The phase behavior of Oil and Gas System.
On the one hand, this method comprises: step 1, under reservoir temperature, be successively passed through supercritical CO into porous thin slice2Gas
Body and CONDENSATE OIL AND GAS form supercritical CO2CONDENSATE OIL AND GAS system；Step 2, to the supercritical CO2CONDENSATE OIL AND GAS system carries out
Phase behavior test.Pass through test supercritical CO provided by the present application2The method of the phase behavior of CONDENSATE OIL AND GAS system, can be accurate
Supercritical CO under simulation high temperature and pressure reservoir conditions2With the phase behavior of CONDENSATE OIL AND GAS mixed phase, to prove supercritical CO2Energy
No effective displacement condensate gas improves recovery ratio and the selection of displacement condensate gas working system lays the foundation.
According to a kind of possible implementation of present aspect, step 2 includes: in the case where testing pressure, to the porous thin slice
Described in supercritical CO2CONDENSATE OIL AND GAS system carries out phase behavior test, wherein the supercritical CO2Gas Condensate ties up to institute
It states under test pressure as nonequilibrium state.By the implementation, supercritical CO can be tested2CONDENSATE OIL AND GAS system it is non-equilibrium
Phase behavior.
According to a kind of possible implementation of present aspect, before step 1, this method further include: step 3, described
Under reservoir temperature, the supercritical CO is passed through into the porous thin slice2Gas；Step 4, since reservoir pressure described in reduction
Supercritical CO2The pressure of gas；Step 5, according to the supercritical CO2The phase change of gas determines target pressure range；Step 6,
The test pressure is chosen in the target pressure range.By the implementation, determining supercritical CO can determine2Gas
Pressure limit in above-critical state, and a test pressure is selected in the pressure limit, it is done to carry out test in step 2
It is good to prepare.
According to a kind of possible implementation of present aspect, the CONDENSATE OIL AND GAS is in the reservoir temperature and the test
Pure condensate gas under pressure.By the implementation, the influence of condensate can be discharged, keep result more accurate.
According to a kind of possible implementation of present aspect, the supercritical CO is reduced2The pressure of CONDENSATE OIL AND GAS system with
Test the dew-point pressure of CONDENSATE OIL AND GAS described in the porous thin slice.By the implementation, it can determine and super face certain
Boundary CO2Under gas content, the dew-point pressure of CONDENSATE OIL AND GAS.
According to a kind of possible implementation of present aspect, this method further include: be passed through super face into the porous thin slice
Boundary CO2Coloring agent.By the implementation, supercritical CO can be made2It is distinguished with CONDENSATE OIL AND GAS, it is non-equilibrium to be more advantageous to system
The observation of phase phase behavior.
According to a kind of possible implementation of present aspect, the porous thin slice is placed perpendicular to horizontal plane.Pass through the reality
Existing mode, enables to supercritical CO2Gas and being passed through for CONDENSATE OIL AND GAS can more simulate practical recovery process, so that result is more
Accurately.
According to a kind of possible implementation of present aspect, the supercritical CO2Gas is in vertical direction from the bottom up
It is passed into the porous thin slice, the CONDENSATE OIL AND GAS is passed through in the porous thin slice from top to bottom in vertical direction.
Above-mentioned technical characteristic may be combined in various suitable ways or be substituted by equivalent technical characteristic, as long as can reach
To the purpose of the present invention.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 is the test supercritical CO according to the embodiment of the present invention2The signal of the method for the phase behavior of CONDENSATE OIL AND GAS system
Property block diagram.
Fig. 2 is the test supercritical CO according to another embodiment of the present invention2The method of the phase behavior of CONDENSATE OIL AND GAS system
Schematic block diagram.
Fig. 3 is the supercritical CO according to another embodiment of the present invention2Special phase change characteristics evolution.
Fig. 4 is the supercritical CO according to another embodiment of the present invention2CONDENSATE OIL AND GAS mixed phase phase change characteristics evolution.
Fig. 5 is the supercritical CO according to another embodiment of the present invention2Line chart is influenced on CONDENSATE OIL AND GAS dew-point pressure.
In the accompanying drawings, identical component uses identical appended drawing reference.Attached drawing is not according to actual ratio.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is test supercritical CO provided by the invention2The method 100 of the phase behavior of CONDENSATE OIL AND GAS system it is schematic
Block diagram.As shown in Figure 1, this method 100 includes:
S110 is successively passed through supercritical CO into porous thin slice under reservoir temperature2Gas and CONDENSATE OIL AND GAS are formed super
Critical CO2CONDENSATE OIL AND GAS system.
S120, to supercritical CO2CONDENSATE OIL AND GAS system carries out phase behavior test.
It, being capable of supercritical CO under accurate simulation high temperature and pressure reservoir conditions by method 1002It is mixed with CONDENSATE OIL AND GAS
The phase behavior of phase, to prove supercritical CO2It can effective displacement condensate gas raising recovery ratio and displacement condensate gas working system
Selection lay the foundation.
Specifically, for present in the Phase Change Experiment for using the quasi- porous media microscopic void of PVT cylinder mould in the prior art
Problem, the present invention propose to be passed through supercritical CO into the porous thin slice using porous thin slice as medium2Gas and CONDENSATE OIL AND GAS, with
Form supercritical CO2CONDENSATE OIL AND GAS system.Under the conditions of certain temperature and pressure, passes through microscopic and record super face
Boundary CO2The phase behavior of CONDENSATE OIL AND GAS system, wherein the phase behavior test in the application can be divided into the survey of non-equilibrium phase phase behavior
Examination and balance phase behavior test.In order to more accurately simulate CONDENSATE OIL AND GAS recovery process, porous thin slice can be disposed vertically
In in microscope observatory, at least one gas access is set on porous thin slice, which leads to super face
Boundary CO2Gas source and condensate gas source, can be set pressure gauge in each communicating passage, be passed into for control porous thin
The pressure of gas in piece.High-precision microscope camera is installed at high-power microscope converting interface, simultaneously for hourly observation
Record supercritical CO2The phase behavior of CONDENSATE OIL AND GAS system, and image transmitting will be recorded in real time to computer.Wherein, porous thin slice is put
It is placed among microscope and incandescent lamp.It is filled with argon gas and nitrogen in incandescent lamp, sublimates after tungsten filament distillation in tube face, lamp
Light is sodium yellow, observes the variation of the light transmittance of system.The processing method of light are as follows: projection utensil used is crystallising dish, burns
Whens cup, surface plate etc., it can be placed in the protective glass plate of projector and project, the fluid image on porous thin slice is when overlooking container
Observed phenomenon.
In the present specification, " porous thin slice " is preferably thin slice of the aperture in the aperture of 0.1mm~15mm.The application's is more
Hole thin slice is prepared by the method that inside glass etching is carried out to sapphire glass thin slice, and specification is 2.5cm × 1.0cm.
It should be understood that supercritical CO in the application2CONDENSATE OIL AND GAS system phase behavior test be under reservoir temperature into
Capable.
As one embodiment, the thin slice of four kinds of porosity types is provided in the application, i.e. the first kind is not consider hole
Thin slice, the second class is the thin slice for only existing parallel lines etching hole, and third class is that there are uniform crossover lines to etch hole
Thin slice, the 4th class is that there are the thin slices of nonuniform load hole.To every kind of thin slice, several regions is taken to be observed.
As shown in Fig. 2, in supercritical CO2In CONDENSATE OIL AND GAS system non-equilibrium phase performance testing, for the sake of description simplicity,
The application is illustrated by taking first kind thin slice as an example.Before S110, this method 100 further include:
S130 is passed through the supercritical CO into the porous thin slice under the reservoir temperature2Gas；
S140 reduces the supercritical CO since reservoir pressure2The pressure of gas；
S150, according to the supercritical CO2The phase change of gas determines target pressure range；
S160 chooses the test pressure in the target pressure range.
Specifically, reservoir temperature is 132 DEG C, is only passed through pure supercritical CO in the porous thin slice2Gas, reservoir pressure
Power is 43.5MPa, and pump decompression is moved back since reservoir pressure, observes supercritical CO2" critical oplescence " phenomenon of gas occurs to disappearing
The overall process of mistake, and shoot photo and video recording.
In order to enhance observing effect, for the supercritical CO being passed through2Gas has screened a kind of supercritical CO2Coloring agent.The dyeing
Agent is in gaseous state CO2In coloration cannot occur, but work as CO2Start to play dyeing function, Er Qiesui when reaching supercriticality
The continuous raising of pressure, dyeing effect be more and more obvious, color gradually deepens, and final color reaches stable.Optionally, rear
The supercritical CO can be passed through in continuous step2Coloring agent, in order to observe.
It should be understood that porous thin slice both can be horizontally arranged or be disposed vertically in S130.
Fig. 3 is supercritical CO when porous thin slice is disposed vertically under reservoir temperature2Special phase change characteristics evolution.In Fig. 3
In, image (1) and image (2) mark are at 132 DEG C, supercritical CO in thin slice within the scope of 43.5-25.17MPa2It is rendered as being similar to
The stable supercritical fluid of the uniform physical property of gas.When pressure reduction to 25.17MPa such as image (4), supercritical CO2
Apparent near critical phase change characteristics are showed, that is, the opaque opalescence phenomenon of yellow occurs, is shown as color in image (4)
It is sharply thin out.It is the strongest from image (4)~(9) critical oplescence, CO at this time2System physical property is in the Asia before acute variation
Stable state, fluid density is big, can be used as CO2The Effective medium of displacement condensate gas, displacement condensate gas are migrated upwards.Pressure is down to
When 18MPa or less, CO2It is gradually converted into normally gaseous feature, opalescence phenomenon fades away, and penetrating light intensity obviously increases.
It can thus be seen that the supercritical CO being passed through2It is above-critical state in 25.17-18MPa, it can be in this target pressure
By supercritical CO within the scope of power2As displacing medium displacement condensate gas.
Carrying out the supercritical CO in microscopic void2When the non-equilibrium phase performance testing of CONDENSATE OIL AND GAS system, the application with
25MPa in the target pressure range is illustrated for being used as test pressure.
Carrying out the supercritical CO in microscopic void2Before the non-equilibrium phase performance testing of CONDENSATE OIL AND GAS system, it can incite somebody to action
CONDENSATE OIL AND GAS is placed under temperature in need of test (i.e. 132 DEG C of reservoir temperature) and test pressure (25MPa) and is flashed
Experiment, using the pure condensate gassing after flash vaporization equilibrium as test condensate gas, to exclude the influence of condensate.
After the temperature and pressure for determining test, supercritical CO is passed through since the lower part etched channels of thin slice2Gas is protected
It keeps steady after determining, is passed through CONDENSATE OIL AND GAS from the top etched channels of thin slice, the case where pump stands no pressure disturbance is moved back during being passed through
Under, exit part supercritical CO2Gas (super face with what is be passed through from lower part etched channels by the condensation tolerance that top etched channels are passed through
Boundary CO2The amount of gas is consistent).It is observed by high-power microscope and records supercritical CO2CONDENSATE OIL AND GAS phase behavior, test knot
Fruit is as shown in Figure 4.
As shown in figure 4, image (1) is there was only pure supercritical CO2When image, background light source is weaker, be filling condensate gas
Preceding base image.The image just started from top injection condensate gas is shown to (3) for image (2), i.e., dark-coloured overcritical
CO2The top of fluid starts to show brighter yellow light, shows that the strong gaseous natural gas of injection mutually has translucency.
Also illustrate the supercritical CO of the condensate gas and the same terms at 132.18 DEG C, 25MPa2There are bright for phase Characteristics and physical property
The difference of aobvious difference, especially density.Image (4) to (5) be shown with condensate gas lasting injection, condensation gas phase with
The supercritical CO of lower part2Mutually start to generate Convention diffusion and mass transfer, and forms the condensate gas-of an edge blurry between
Supercritical CO2It dissolves each other and mixes interphase (transition zone, like the intermediate micro emulsion liquid phase occurred in microemulsion system), while with upper
The increase and the increase of Convention diffusion time for the condensation tolerance that portion is continually fed into generate the deeper gas-gas boundary layer of color.In this
Between mutually have certain thickness, interphase has stronger scattering phenomenon to the incandescent light of yellow, shows orange-yellow " critical
Opalescence " phenomenon.The lasting injection with condensate gas is shown in image (6) to (10), and the volume of top condensation gas phase increases, together
When, condensate gas-supercritical CO of the middle edge blurry occurred of image (4) to (5)2It dissolves each other and mixes interphase since image (6)
Edge starts to be apparent from.Image (6) is into (10), although interphase holding still has certain thickness, to the white heat of yellow
The scattering phenomenon of light is obviously much more limpid in sight than image (1) to (3), and it is existing to show significant orange-yellow " critical oplescence "
As.Illustrate at this point, in thin slice from top to bottom, condensate gas band, condensate gas-supercritical CO2It dissolves each other and mixes interphase and overcritical
CO2The variation of band is no longer continuously that transitional face plays separated natural gas band and supercritical CO2The effect of band has similar
The property of " phase interface ".Image (11) to (12): with the lasting injection of natural gas, the volume of top condensation gas phase increases, from
Photo (11) starts, and until image (12), intermediate phase thickness is gradually thinning and is punctured into opaque bright of a yellow
" interface ", upper part are the condensation gas phases of clear homogeneous, and its underpart is transparent supercritical CO2Phase.
It can be seen that the supercritical CO in specific supercritical region from the above research2It can be generated between gas and condensate gas
Gravitational differentiation.For target gas condensate reservoir, in formation temperature, pressure is supercritical CO under 25MPa2Exist with condensate gas obvious
Interface；Supercritical CO2Air cushion can realize that stabilization is buried, supercritical CO2Condensate gas intermediate zone then forms the power of purging, is purging
" spring ".It can implement supercritical CO in this pressure limit2Bury and improve natural gas and condensate recovery ratio.
By testing above, can determine under the conditions of certain temperature and pressure, supercritical CO2In condensation oil systems
In the presence of " phase interface " phenomenon and supercritical CO2Condensate gas recovery ratio can be effectively improved, is supercritical CO2Displacement condensate gas work
The selection for making system lays the foundation.
It below will be to supercritical CO2The balance phase behavior test of CONDENSATE OIL AND GAS system is described.Carry out the step it
Before, it is also necessary to dew-point pressure test is carried out to CONDENSATE OIL AND GAS, to determine influence of the different aperture to CONDENSATE OIL AND GAS dew-point pressure.Tool
Body, under the conditions of reservoir temperature (132 DEG C) and reservoir pressure (43.5MPa), to the porous of above-mentioned four kinds of different aperture features
It is passed through CONDENSATE OIL AND GAS in thin slice, then moves back pump decompression, while under the conditions of identical temperature and pressure, carrying out PVT observation dew points
Pressure testing observes the dew-point pressure in every kind of thin slice by high-power microscope, and the results are shown in Table 1.
Dew-point pressure of 1 thin slice of table under different test conditions
It can be seen that the reduction with pressure from the test result in table 1, CONDENSATE OIL AND GAS will appear retrograde condensation phenomenon, analysis
Condensate out, microscopic void have the dew-point pressure of CONDENSATE OIL AND GAS system certain influence, and hole is finer and close, dew-point pressure
It is lower.It is higher in dew-point pressure ratio PVT in the actual reservoir of porous thin slice simulation simultaneously.This is mainly due to porous Jie
Matter has complicated micropore structure, and tiny pore throat geometric dimension and rock surface have lower free energy, thus
When condensate gas and reservoir rock porous media contact, capillary pressure, suction-operated, capillary condensation and wetability can be generated and become
The various interfacial phenomena such as change, they to some extent have an impact condensate gas phase change.This test result shows porous media
There is influence to condensate gas system phase in micropore structure, hole is finer and close, and dew-point pressure is higher.
In balance phase behavior testing procedure, for supercritical CO in test porous media2To CONDENSATE OIL AND GAS dew-point pressure
It influences, is illustrated by taking the 4th porous thin slice of class as an example.Under reservoir temperature (132 DEG C) and reservoir pressure (43.5MPa), from more
The top of hole thin slice is passed through a certain amount of supercritical CO2Gas keeps after stablizing, is passed through equilibrium state from the lower part of porous thin slice
Then condensate gas moves back pump decompression, the supercritical CO of the content is observed by high-power microscope2The dew point pressure of condensate gas under gas
Power.Change supercritical CO2The intake of gas compares the supercritical CO of different content2Shadow of the gas for Dew Point of Gas Condensate pressure
It rings, with supercritical CO2Content is horizontal axis, and dew-point pressure is that the longitudinal axis makees line chart, is represented by dotted lines；As a comparison, equally in PVT
Carry out supercritical CO in cylinder2The test that gas influences CONDENSATE OIL AND GAS dew-point pressure, equally makes line chart, is indicated with solid line,
As a result as shown in Figure 5.As can be seen that either in PVT or in porous thin slice, supercritical CO2Gas is passed through all
It can reduce the dew-point pressure of condensate gas, to reduce the precipitation of condensate.
Preferably, in step 22, which is to place perpendicular to horizontal plane.
By the test of step 22, supercritical CO can determine2The influence of gas being passed through for Dew Point of Gas Condensate pressure,
For supercritical CO2The selection of the working system of gas displacement condensate gas lays the foundation.
Although describing the present invention herein with reference to specific embodiment, it should be understood that, these realities
Apply the example that example is only principles and applications.It should therefore be understood that can be carried out to exemplary embodiment
Many modifications, and can be designed that other arrangements, without departing from spirit of the invention as defined in the appended claims
And range.It should be understood that different appurtenances can be combined by being different from mode described in original claim
Benefit requires and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used
In other described embodiments.
Claims (8)
1. a kind of test supercritical CO2The method of CONDENSATE OIL AND GAS system phase behavior, which is characterized in that the described method includes:
Step 1, under reservoir temperature, be successively passed through supercritical CO into porous thin slice2Gas and CONDENSATE OIL AND GAS are formed overcritical
CO2CONDENSATE OIL AND GAS system；
Step 2, to the supercritical CO2CONDENSATE OIL AND GAS system carries out phase behavior test.
2. the method according to claim 1, wherein the step 2 includes:
In the case where testing pressure, to supercritical CO described in the porous thin slice2CONDENSATE OIL AND GAS system carries out non-equilibrium phase behavior survey
Examination, wherein the supercritical CO2Gas Condensate ties up under the test pressure as nonequilibrium state.
3. according to the method described in claim 2, it is characterized in that, before step 1, the method also includes:
Step 3, under the reservoir temperature, be passed through the supercritical CO into the porous thin slice2Gas；
Step 4 reduces the supercritical CO since reservoir pressure2The pressure of gas；
Step 5, according to the supercritical CO2The phase change of gas determines target pressure range；
Step 6 chooses the test pressure in the target pressure range.
4. according to the method described in claim 3, it is characterized in that, the CONDENSATE OIL AND GAS is in the reservoir temperature and the survey
The pure condensate gassing obtained under pressure testing power.
5. the method according to claim 1, wherein the step 2 includes:
Reduce the supercritical CO2The pressure of CONDENSATE OIL AND GAS system is to test the dew point of CONDENSATE OIL AND GAS described in the porous thin slice
Pressure.
6. the method according to any one of claims 1 to 5, which is characterized in that the method also includes:
Supercritical CO is passed through into the porous thin slice2Coloring agent.
7. the method according to any one of claims 1 to 5, which is characterized in that the porous thin slice is perpendicular to horizontal plane
It places.
8. the method according to the description of claim 7 is characterized in that the supercritical CO2Gas is in vertical direction from the bottom up
It is passed into the porous thin slice, the CONDENSATE OIL AND GAS is passed through in the porous thin slice from top to bottom in vertical direction.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407052A (en) * | 2022-08-18 | 2022-11-29 | 西南石油大学 | Method for testing influence of wax content on phase state of high-wax-content condensate oil gas system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778554A (en) * | 2012-08-06 | 2012-11-14 | 重庆大学 | Experimental device for improving permeability of shale gas storage layer in supercritical CO2 fracturing process |
| CN102967525A (en) * | 2012-12-06 | 2013-03-13 | 重庆大学 | Experiment device for replacing CH4 in adsorption storage layer by multi-phase-state CO2 and mixed gas |
| CN105628811A (en) * | 2015-12-27 | 2016-06-01 | 西南石油大学 | Testing device for competitive adsorption of supercritical CO2 and CH4 in shale and testing method of device |
| CN106468160A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of determination CO2Drive method and the CO of foam stream oil ingredient2The analogy method driven |
| CN106644871A (en) * | 2016-09-12 | 2017-05-10 | 中国石油大学(华东) | Evaluating method of oil and gas reservoir seepage by supercritical carbon dioxide fracturing fluid and method thereof |
-
2017
- 2017-08-04 CN CN201710659553.1A patent/CN109374824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778554A (en) * | 2012-08-06 | 2012-11-14 | 重庆大学 | Experimental device for improving permeability of shale gas storage layer in supercritical CO2 fracturing process |
| CN102967525A (en) * | 2012-12-06 | 2013-03-13 | 重庆大学 | Experiment device for replacing CH4 in adsorption storage layer by multi-phase-state CO2 and mixed gas |
| CN106468160A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | A kind of determination CO2Drive method and the CO of foam stream oil ingredient2The analogy method driven |
| CN105628811A (en) * | 2015-12-27 | 2016-06-01 | 西南石油大学 | Testing device for competitive adsorption of supercritical CO2 and CH4 in shale and testing method of device |
| CN106644871A (en) * | 2016-09-12 | 2017-05-10 | 中国石油大学(华东) | Evaluating method of oil and gas reservoir seepage by supercritical carbon dioxide fracturing fluid and method thereof |
Non-Patent Citations (8)
| Title |
|---|
| ABDULLAH AL-ABRI 等: "Enhanced Natural Gas and Condensate Recovery by Injection of Pure SCCO2,Pure CH4 and Their Mixtures: Experimental Investigation", 《SPE INTERNATIONAL》 * |
| 冯文彦: "超临界凝析气藏开发后期注CO_2提高采收率――以北部湾盆地福山凹陷莲4断块为例 ", 《天然气工业》 * |
| 姜凤光 等: "二氧化碳驱地下流体相态特征研究", 《特种油气藏》 * |
| 孙杨: "天然气藏超临界CO_2埋存及提高天然气采收率机理", 《中国优秀博士学位论文全文数据库 工程科技I辑》 * |
| 张利明 等: "《凝析气藏循环注气开发中后期重力分异特征》", 《大庆石油地质与开发》 * |
| 张利明: "牙哈凝析气藏循环注气提高采收率相态特征研究", 《中国优秀硕士士学位论文全文数据库 工程科技I辑》 * |
| 李孟涛 等: "超临界二氧化碳混相驱油机理实验研究", 《石油学报》 * |
| 章星 等: "可视装置中CO_2与正戊烷或原油接触特征和表征方法", 《石油实验地质》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407052A (en) * | 2022-08-18 | 2022-11-29 | 西南石油大学 | Method for testing influence of wax content on phase state of high-wax-content condensate oil gas system |
| CN115407052B (en) * | 2022-08-18 | 2023-09-19 | 西南石油大学 | Method for testing influence of wax content on phase state of high-wax-content condensate oil-gas system |
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